Rock-pulverizer.



E. A. VELDE.

ROCK PULVERIZER.

APPLICATION FILED JUNE251 I917- v 11 ,,%5,54JW, Patented Ja11.15,19l8;.

3 SHEETS-SHEET l.

ATTORNEYS E. A. VELDE.

ROCK PULVERIZER.

APPLICATION FILED JUNE 25,1917.

1 ,gfififiQ? Patented Jan. 15, 1918.

3 SHEETS-SHEET 3.

A TTOR/VEVS ERNEST A. VELDE, OF CEDAR RAPIDS, IOWA.

BOCK-PULVERIZER.

Specification of Letters Ji'atent.

Patented Jan. 115, 1913.

Application filed June 25, 1917. Serial No. 176,712.

To all whom it may concern:

Be it known that I, ERNEST A. VELDE, a citizen of the United States, and a resident of Cedar Rapids, in the county of Linn and State of Iowa, have invented new anduseful Improvements in Rock-Pulverizers, of which the following is a specification.

My invention is an improvement in rock pulverizers, and has for its object to rovide a device of the character speci ed,

. wherein the pulverizing mechanism is in the form of hammers detachably connected with a rotor, and so shaped that every surface of the hammer may be used, and wherein detachable linings are provided for cooperating with the hammer.

In the drawings:

Figure 1 is a side view of the improved pulverizer;

Fig. 2 is a. transverse vertical section;

Fig. 3 is a section at right angles to Fig. 2.

In the present embodiment of the invention, a casing is provided, consisting of a body 1 substantially rectangular in cross section, and a cover 2 which is hinged to'the body, as indicated at 3, and latch mechanism indicated at 4 is provided for securing the opposite edge of the cover to the body. The cover has a feed opening 5, with a hopper 6 at the opening, and a shaft 7 is journaled transversely of the casing in bearings 8.

The rotor or wheel consists of similar sections 9, which have central openings to receive the shaft, and are keyed to the shaft as indicated at 10, and the sections are held together by bolts and nuts 11. These sectionshave cooperating recesses 12 in their inner faces, for receiving nuts 13, the said nuts engaging bolts 14 which connect the hammers 15 to the wheel or rotor. Each of the hammers .5, as shown, has its inner and outer faces convex, and each hammer is provided with a central opening 16, the ends of each opening being reamed or flared, as indicated at 17. V

The bolt 14 has a frusto con'feal or tapering head 18 for engaging these flared portions to prevent displacement of the hammer, and it will be evident that either face of the hammer may be outward. The head of the bolt also has a deep kerf 19, and the bolt has a longitudinally extending slot 20 at its threaded portion. This slot is adapted to register with openings in the nut 13 to receive a cotter pin 21 for locking the nut on the bolt.

The shaft 7 may b2 rotated by means of a belt 22 from any suitable source of power, the belt engaging a pulley on the shaft.

It will be noticed from an inspection of Figs. 1 and 2 that above the feed opening the cover 2 has a dome indicated at 2, thus providing a large space at this point for the rock to be pulverized. The cover is lined with detachable linings indicated at 24:, 25, 26 and 27, said lining sections being shaped to fit the top and sides of the casing, and it will be noticed that the sections 24: and 26 are concaved transversely to fit roughly the convex surface of the hammer. The lining sections are held in place by bolts 28 having Wedge shaped heads, which engage similar openings in the lining sections. The bolts are passed outwardly through the cover and are engaged by nuts 29 outside the cover.

The inner faces of the lining sections are corrugated, as shown, and the body of the casing has an arched grating-30 concaved transversely, as shown in Fig. 2, to correspond with the curve of the outer faces of the hammers, and the said grating permits the pulverized rock to drop through into a suitable bin or receptacle arranged below the pulverizer.

The sides of the body above the grate are lined with linings 31 similar to the sections 27 of the cover.

In operation, the rock to be crushed is fed to the hopper 6, and the wheel moves in the direction indicated by the arrow in Fig. 3, the hammers will strike the rock and will throw it up into the dome. The hammers will strike in succession, and in addition they will beat up the rock that falls downwardly until it is of a size to pass through the grating. hen the hammers become worn on their active faces they may be turned and when the linings become worn or broken they may be removed and re placed. The hammers are square in cross section so that either face may be the opcrative face, that is, either side wall may he brought to the front.

I claim:

In a device of the character specified, a shaft. a wheel consisting of similarscctions movable longitudinally of the shaft toward and from each other, a key for keying the sections to the shaft, said sections having registering recesses'on their meeting faces, gaging said first mentioned means in the and radial openings leading from the re recesses, the inner and outer ends of the cesses, hammers having openings adapted to openings of the hammers being reamed and 10 register with the radial openings, means the said first mentioned means having. a 6 passing through openings of the hammer head engaging said reamed ends, said hamand the radial openings and extending into mers being reversible. the recesses, and other securing'means en- ERNEST A. VELDE. 

